During their life spans, green plants give off more oxygen to the atmosphere than they take in for use in
A. fat metabolism.
B. respiration.
C. the Krebs cycle.
D. the Calvin cycle.
B. respiration.
You might also like to view...
The group including ferns, whisk ferns, and horsetails includes plants with which of the following characteristics? Select all correct choices
A. plants with helically arranged leaves B. plants with leaves arranged in whorls C. plants lacking leaves but possessing photosynthetic stems D. plants having "underground" stems E. plants lacking roots
How is it that humans can perceive multiple sounds at once?
a. Each portion of the basilar membrane vibrates at a unique frequency, and multiple regions can be stimulated at the same time. b. The more frequencies of sounds that are present, the further the sound travels into the cochlea. c. We have two ears, each perceiving a subset of frequencies in the environment. d. The fluid in the middle ear can transmit multiple frequencies to the oval window. e. Sounds reaching the left or right ear result in different nerve impulses.
Which of the following includes all the factors that add to a person's ecological footprint?
a) energy and food resources b) energy, food, water, and shelter resources; wastes; and greenhouse gases c) energy, food, and water resources d) energy, food, water, and shelter resources
Often connected to a petiole, ____ may be either simple or compound and are typically the main organs of
photosynthesis and gas exchange.
a. roots b. leaves c. flowers d. stems e. trichomes